Katerina Espa Cervena, Sleep Center CENAS, Geneva, Switzerland
Given the relevance of sleep to health, there is clinical and epidemiologic interest to assess sleep duration, quality and specific sleep disturbances in clinical and research populations. Subjective and objective measures of sleep structure or quality could help to characterize the chronic sleep disturbances in clinical setting, but also in research (study target, exclusion criteria etc.). The polysomnography (PSG) is undoubtfully the gold standard for objective sleep measurement, and the most powerful diagnostic tool in sleep breathing disorders, motor disorders, parasomnias and other sleep pathologies. However, its price and time-consuming nature are two major limiting factors. Moreover, in-lab sleep duration may not be characteristic of at-home sleep duration, as the polysomnography may interfere with typical sleep. In contrast to objective investigations, subjective sleep duration/quality measures can be efficient and practicable means of collecting sleep data, especially in clinical screening and epidemiological studies.
The lecture will provide the comprehensive overview of different sleep measurements, including self-report subjective assessments tools, and objective measures such as polysomnography, ventilatory polygraphy and actigraphy.
SCHOOL ACTIVITY: The interpretation of sleep EEG recordings
Katerina Espa Cervena, Sleep Center CENAS, Geneva, Switzerland
Polysomnography (PSG) is the gold standard for objective sleep duration and sleep structure measurements. Standard sleep recording includes measurements of brain activity (EEG), eye movements (EOG) and chin muscle tone (EMG). It is the unique method permitting to determine sleep onset and differentiate different sleep stages. This comprehensive lecture will include overview of different aspects of the sleep study scoring process beginning with a brief review of history, electrode placement, illustrations of main principles of sleep analysis, and the scoring rules. The school activity will provide participants with the necessary background and explanations to understand the rules of the AASM Manual for the Scoring of Sleep and Associated Events. The school activity goal is the basic introduction to the field of sleep recording and analysis.